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Molex Unveils Major Sensor Innovations in Automotive Active Noise Cancellation to Improve Safety and Driving Experiences

(PRNewsfoto/Molex Incorporated)

News provided by

Molex Incorporated

Jan 27, 2021, 08:45 ET

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LISLE, Ill., Jan. 27, 2021 /PRNewswire/ --

  • First road-noise cancelling product in new sensor family enters production
  • Performance validated for reductions in noise, weight and cost
  • Fewer design cycles and flexible sensor placement simplifies engineering
  • Molex teams with Analog Devices and Silentium to advance automotive ecosystem
Molex’s durable, lightweight Active Noise Cancellation sensors reduce road noise for safer, enjoyable driving experiences
Molex’s durable, lightweight Active Noise Cancellation sensors reduce road noise for safer, enjoyable driving experiences

Transition to electrified vehicles increases need to reduce road noise, driver fatigue and "highway hypnosis"

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Molex, a leading global connectivity and electronics solutions provider, introduced an accelerometer-based Road Noise Cancelling (RNC) sensor, the first product in a new family of automotive Active Noise Cancellation (ANC) sensors. These sensors will play a critical role in combatting unwanted road, wind and HVAC car noise while reducing low-frequency sounds that increase driver fatigue.

Advancements in the electronics industry have enabled ANC technology, more commonly associated with high-end headphones, to transform how car manufacturers address road-based noises. Instead of installing expensive and heavy sound-absorbing materials to insulate car interiors from excessive road noise, ANC sensors are designed to be installed on a car's chassis for more accurate and efficient results. Devices mounted to wheel wells and car frames, however, must be built to withstand the harshest conditions.

"As the transition to electrified vehicles intensifies, it will become critical to reduce road noise, which today is masked by internal combustion engines," said Carrieanne Piccard, VP and General Manager, Transportation Solutions Business Unit, Molex. "Our long history in the automotive industry uniquely positions Molex to develop powerful, durable sensor technology that captures and cancels road noises while enabling safe and enjoyable driving experiences."

According to Molex's recently commissioned "The Future of Automotive Survey," nine in 10 new cars in 2030 will be hybrid or fully electric. In fact, respondents ranked electrification, connectivity and sensor technology among the most important innovations. They also cited the need for electronics and software to operate in extreme scenarios as a barrier to innovation.

Superior Performance in Harsh Conditions

Molex's family of ANC accelerometer and microphone sensors use Analog Devices' Automotive Audio Bus® (A2B) technology to ensure delivery of high-fidelity audio while significantly reducing cabling complexity, costs and weight. By pairing its sensors with the A2B network, Molex transmits noise signals to the processing unit in less than two milliseconds. The sensors include integral connectors and are daisy chained to simplify integration while providing up to a 30% reduction in cable weight. Derived from Molex's Mini50 Connector family, these connectors offer up to 50% space savings over traditional USCAR 0.64 connectors.

Moreover, Molex's sensors are available in different housings, including an IP6K9K enclosure, to ensure greater protection from harsh conditions while enabling placement closest to the road noise. Detecting the sound at its source speeds processing of the noise-canceling signal; A2B technology also allows a higher number of signals per chain to be processed. Unlike other products on the market, Molex sensors are sensitive enough to measure and cancel road noise at slower vehicle speeds, giving designers greater flexibility in sensor placement while simplifying engineering.

"Analog Devices is pleased to collaborate with Molex to bring to market low-latency ANC / RNC sensors based on Analog Devices' A2B network and MEMs accelerometer technologies," said Vlad Bulavsky, Senior Director, Automotive Connectivity, Analog Devices, Inc. "We are already seeing early signs that the quality of Molex's sensors together with A2B/ADXL317's design simplicity is resonating with our mutual customer base."

Safer, Optimized Driving Experiences

Molex also has tested and validated the use of its RNC sensor with Silentium's "Active Acoustics" software, which removes up to 90% of unwanted noises across a broad band of frequencies (from 20Hz to 1kHz) to improve driver and occupant comfort, safety and wellbeing. In particular, the elimination of frequent humming or droning noises coming from roads and tires is critical to decreasing "highway hypnosis" and driver fatigue.

"Working with Molex accelerates our ability to usher in a new era of safer, more enjoyable driving experiences," said Yoel Naor, CEO of Silentium. "Seamless integration of Molex's sensors with our software also reduces automotive design cycles and engineering costs." Silentium's noise cancelling technology is being adopted by leading automotive suppliers and OEMs. Jaguar and Land Rover announced deployment of Silentium's technology in October 2020.

More information about Molex's Active Noise Cancellation Sensors can be found here. 

Molex Automotive: Experience Counts
For nearly 30 years, Molex has played a vital role in the automotive industry, especially in addressing demand for flawless interconnectivity of mobile devices and data services. In that time, the company has supplied more than 95% of engine control and powertrain connectivity solutions for a major automotive OEM. Molex brings its heritage in networking and longstanding reputation for product quality and customer collaboration to meet growing consumer needs across the automotive ecosystem, spanning electrification, Advanced Driver-Assistance Systems (ADAS), automotive high-speed networking, vehicle antenna systems, connected mobility solutions and vehicle-to-everything communications (V2X).

About Molex
Molex makes a connected world possible by enabling technologies that transform the future and improve lives. With a presence in more than 40 countries, Molex offers a complete range of connectivity products, services and solutions for the data communications, medical, industrial, automotive and consumer electronics industries. For more information visit www.molex.com.

Automotive Audio Bus® (A2B) technology is a registered trademark of Analog Devices Inc.

SOURCE Molex Incorporated

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